Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.

Bestcold and ROVSUN on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, Bestcold scores higher on 3 of the 6 ratings.

Bestcold
ROVSUN
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Bestcold	ROVSUN
Efficiency index	46% (higher)median —	44% (higher)median —
COP at 5°F	45% (higher)median 1.97	37% (higher)median 1.85
Capacity retention at 5°F	43% (higher)median 72%	41% (higher)median 73%
HSPF2	48%median 9.0	52%median 9.5
SEER2	51%median 18.5	51%median 20.0
EER2	39% (higher)median 11.2	35% (higher)median 11.1
Heating capacity at 5°F	46%median 18,950 Btu/h	46%median 10,750 Btu/h
Outdoor models	79	82
AHRI certifications	85	91

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Bestcold	ROVSUN
CEE 2025 Tier 1 (Split ASHP)	68.4%54 models	78%64 models
CEE 2026 Tier 1 (Split ASHP)	68.4%54 models	78%64 models
CEE Advanced Tier (Split ASHP)	1.3%1 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	65.8%52 models	74.4%61 models
DOE Cold Climate Heat Pump Challenge	1.3%1 models	0%0 models
ENERGY STAR Cold Climate	10.1%8 models	35.4%29 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.

Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 8 groups where both have models

Bestcold
ROVSUN
All models of the group

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of Oct 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	Bestcold	ROVSUN
Ducted, up to 1.5 tons	1 · index —	12 · index 54%
Ducted, 2 tons	9 · index 63%	4 · index 47%
Ducted, 2.5–3 tons	9 · index 50%	3 · index 45%
Ducted, 3.5–4.5 tons	18 · index 54%	4 · index 39%
Non-ducted, up to 1.5 tons	26 · index 43%	46 · index 40%
Non-ducted, 2 tons	5 · index 33%	8 · index 45%
Non-ducted, 2.5–3 tons	8 · index 35%	6 · index 52%
Non-ducted, 3.5–4.5 tons	3 · index 29%	1 · index 27%

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F.
Size and duct type	BestcoldCold-climate score, best model	ROVSUNCold-climate score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models qualify)	59.0(50 is the typical model of its size class)TD-09D2HRH/DVOAlso listed as TC-09CHRH/DVO-D, TSC-09HA2/I3XI23B-O, RVD-O9D2/O12 of 12 models qualify · AHRI 217154242
Ducted, 2 tons	80.9(50 is the typical model of its size class) (higher)MYUSA24NA23BCH19-Owith ducted air handler MYUSA24NA23BCH19-I8 of 9 models qualify · AHRI 217896463	68.9(50 is the typical model of its size class)RV-AHU24S-Owith ducted air handler RV-AHU24S-I3 of 4 models qualify · AHRI 218471396
Ducted, 2.5–3 tons	70.3(50 is the typical model of its size class) (higher)MYUA36NA23BCH19-Owith ducted air handler MYUA36NA23BCH19-I6 of 9 models qualify · AHRI 217896460	64.5(50 is the typical model of its size class)RV-AHU36S-Owith ducted air handler RV-AHU36S-I2 of 3 models qualify · AHRI 218471397
Ducted, 3.5–4.5 tons	76.6(50 is the typical model of its size class) (higher)MYUSA48NA23BCH18-Owith ducted air handler MYUSA48NA23BCH18-I14 of 18 models qualify · AHRI 217896465	66.4(50 is the typical model of its size class)RV-AHU55S-Owith ducted air handler RV-AHU55S-I4 of 4 models qualify · AHRI 218471398
Non-ducted, up to 1.5 tons	68.6(50 is the typical model of its size class)MYTW18NA23BCH24-O19 of 26 models qualify · AHRI 218599346	68.6(50 is the typical model of its size class)TMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-O33 of 46 models qualify · AHRI 216020714
Non-ducted, 2 tons	37.7(50 is the typical model of its size class)MYTW24NA23BCH24ES-Owith ductless indoor unit MYTD24NA23BCH24ES-IAlso listed as MYTD24NA23BCH24-O2 of 5 models qualify · AHRI 218599337	62.6(50 is the typical model of its size class) (higher)TSC-24HA2/I3XI21B-Owith ductless indoor unit TC-24CHRH/DVIAlso listed as RVC-24/O5 of 8 models qualify · AHRI 217598675
Non-ducted, 2.5–3 tons	57.5(50 is the typical model of its size class)MYTW27NA23BCH24-O6 of 8 models qualify · AHRI 218599347	57.5(50 is the typical model of its size class)TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-O6 of 6 models qualify · AHRI 216020715
Non-ducted, 3.5–4.5 tons	31.2(50 is the typical model of its size class) (higher)MYTW42NA23BCH24-O2 of 3 models qualify · AHRI 218599349	24.7(50 is the typical model of its size class)RV42M2/19-O1 of 1 models qualify · AHRI 218035868

All-around best

Best all-around model per size and duct type. Score = 50% heating, the mean of its peer percentiles on COP at 5°F, Capacity retention at 5°F, HSPF2, plus 50% cooling, the mean of its peer percentiles on SEER2 and EER2 (share of the other models in its peer group it beats, 0–100). All five ratings are required; there is no minimum heat kept at 5°F. In each duct type a model is sold in, it is scored on its pairing of that type with the best score; equal scores (one decimal) go to the higher cold-climate score, then the higher heating capacity at 5°F.
Size and duct type	BestcoldAll-around score, best model	ROVSUNAll-around score, best model
Ducted, up to 1.5 tons	None on this board (0 of 1 models have all five ratings)	65.2(50 is the typical model of its size class)TD-09D2HRH/DVOAlso listed as TC-09CHRH/DVO-D, TSC-09HA2/I3XI23B-O, RVD-O9D2/O12 of 12 models have all five ratings · AHRI 217154242
Ducted, 2 tons	79.6(50 is the typical model of its size class) (higher)MYGA36NA23BCH19-Owith ducted air handler MYGA24NA23BCH20-I8 of 9 models have all five ratings · AHRI 217606049	70.0(50 is the typical model of its size class)RV-AHU24S-Owith ducted air handler RV-AHU24S-I4 of 4 models have all five ratings · AHRI 218471396
Ducted, 2.5–3 tons	65.1(50 is the typical model of its size class) (higher)MYUA36NA23BCH19-Owith ducted air handler MYUA36NA23BCH19-I7 of 9 models have all five ratings · AHRI 217896460	57.9(50 is the typical model of its size class)RV-AHU36S-Owith ducted air handler RV-AHU36S-I3 of 3 models have all five ratings · AHRI 218471397
Ducted, 3.5–4.5 tons	72.6(50 is the typical model of its size class) (higher)MYOA48NA22BCH18-Owith ducted air handler MYOA48NA22BCH18-I15 of 18 models have all five ratings · AHRI 217650580	54.9(50 is the typical model of its size class)RV-AHU55S-Owith ducted air handler RV-AHU55S-I4 of 4 models have all five ratings · AHRI 218471398
Non-ducted, up to 1.5 tons	72.2(50 is the typical model of its size class)MYTW18NA23BCH24-O26 of 26 models have all five ratings · AHRI 218599346	72.2(50 is the typical model of its size class)TMSC-18HA2/I2XI20B-OAlso listed as TMSC-18HA2/I2XI20B-O46 of 46 models have all five ratings · AHRI 216020714
Non-ducted, 2 tons	48.8(50 is the typical model of its size class)MYTW24NA23BCH24ES-Owith ductless indoor unit MYTD24NA23BCH24ES-IAlso listed as MYTD24NA23BCH24-O5 of 5 models have all five ratings · AHRI 218599337	58.4(50 is the typical model of its size class) (higher)TSC-24HA2/I3XI21B-Owith ductless indoor unit TC-24CHRH/DVIAlso listed as RVC-24/O8 of 8 models have all five ratings · AHRI 217598675
Non-ducted, 2.5–3 tons	65.1(50 is the typical model of its size class)MYTW27NA23BCH24-O8 of 8 models have all five ratings · AHRI 218599347	65.1(50 is the typical model of its size class)TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-O6 of 6 models have all five ratings · AHRI 216020715
Non-ducted, 3.5–4.5 tons	42.4(50 is the typical model of its size class) (higher)MYTW42NA23BCH24-O3 of 3 models have all five ratings · AHRI 218599349	27.2(50 is the typical model of its size class)RV42M2/19-O1 of 1 models have all five ratings · AHRI 218035868

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.

Top model per rating by peer percentile, with its AHRI-certified value and peer group
Rating	Bestcold	ROVSUN
COP at 5°F	beats 86% · 2.30MYOA48NA22BCH18-ODucted, 3.5–4.5 tons	beats 77% · 2.10TSC-12HA1/I3XI22B-OAlso listed as TSC-12HA1/I3XI22B-O, RV12T1/22-ONon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 97% · 103%MYIRU24NA22BCH18*Ducted, 2 tons	beats 92% · 100%RV-AHU24S-ODucted, 2 tons
HSPF2	beats 84% · 9.8MYUA48NA23BCH19-ODucted, 3.5–4.5 tons	beats 81% · 10.4TSC-24HA2/I3XI21B-OAlso listed as RVC-24/ONon-ducted, 2 tons
SEER2	beats 91% · 24.0MYTW27NA23BCH24-ONon-ducted, 2.5–3 tons	beats 91% · 24.0TMSC-27HA2/I2XI19B-OAlso listed as TMSC-27HA2/I2XI19B-ONon-ducted, 2.5–3 tons
EER2	beats 98% · 14.0MYUA24NA23BCH20-ODucted, 2 tons	beats 70% · 13.0TSC-09HA1/I3XI22B-OAlso listed as TSC-09HA1/I3XI22B-O, TSC-09HA2/I3XI23B-O, RV09T1/22-ONon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 97% · 25,800 Btu/hMYIRU24NA22BCH18*Ducted, 2 tons	beats 91% · 50,000 Btu/hRV-AHU55S-ODucted, 3.5–4.5 tons

More comparisons

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Bestcold vs ROVSUN heat pumps